Consider the species . Choose the correct option with respect to the three species.
They are isoelectronic and only two have tetrahedral structures.
They are isoelectronic and all have tetrahedral structure.
Only two are isoelectronic and all have tetrahedral structures.
Only two are isoelectronic and only two have tetrahedral structures.
So, They are isoelectronic and all have tetrahedral structures.
Hence correct answer is option 2.
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